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2009 16th International Conference on Digital Signal Processing最新文献

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A real-time monitoring system for diesel and gasoline exhaust exposure 柴油和汽油废气暴露的实时监测系统
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201081
B. Konnanath, Hyuntae Kim, A. Spanias, B. Bakkaloglu, Joseph Wang, A. Mulchandani, N. Myung
{"title":"A real-time monitoring system for diesel and gasoline exhaust exposure","authors":"B. Konnanath, Hyuntae Kim, A. Spanias, B. Bakkaloglu, Joseph Wang, A. Mulchandani, N. Myung","doi":"10.1109/ICDSP.2009.5201081","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201081","url":null,"abstract":"An integrated sensor array system is developed for detection and identification of environmental pollutants in diesel and gasoline exhaust fumes. The system includes a low noise floor analog front-end followed by a signal processing stage. Classification methods are used since the pollutants are often encountered as complex mixtures. In this paper, we present techniques to detect, digitize and classify analytes. This is done by extracting appropriate features from sensor data and using pattern recognition methods to identify the analytes. The detection analog front-end achieves 54dB SNR. The low-noise digitization technique is presented along with the feature extraction and classification algorithms. Comparative results are given for a series of pattern classifiers.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116203327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Random translational transformation for changeable face verification 可变人脸验证的随机平移变换
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201106
Yongjin Wang, D. Hatzinakos
{"title":"Random translational transformation for changeable face verification","authors":"Yongjin Wang, D. Hatzinakos","doi":"10.1109/ICDSP.2009.5201106","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201106","url":null,"abstract":"Producing changeable biometric templates from limited number of human biometric traits is important for the deployment of biometric technology in a wide variety of applications. This paper introduces a new method for changeable face verification using random translational transformation. The proposed method is based on translating the original feature vectors by adding a randomly generated vector. The sorted index numbers of the resulting vector is stored as the template for verification. The random translational transformation in conjunction with the sorted index number approach constitutes a non-invertible transformation, and hence the privacy of the users can be protected. It is shown that the proposed method is computationally simple, and is capable of generating templates with strong changeability. The effectiveness of the proposed method is well supported by both the detailed analysis and extensive experimentation.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"360 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114097867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-band frequency compression for sensorineural hearing impairment 多波段频率压缩治疗感音神经性听力障碍
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201179
P. N. Kulkarni, P. C. Pandey, D. S. Jangamashetti
{"title":"Multi-band frequency compression for sensorineural hearing impairment","authors":"P. N. Kulkarni, P. C. Pandey, D. S. Jangamashetti","doi":"10.1109/ICDSP.2009.5201179","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201179","url":null,"abstract":"Sensorineural hearing loss is associated with widening of the auditory filters, leading to increased spectral masking and degraded speech perception. Multi-band frequency compression can be used for reducing the effect of spectral masking. The speech spectrum is divided into a number of bands and spectral samples in each of these bands are compressed towards the band center, by a constant compression factor. In the present study, we have investigated the effectiveness of the scheme for different compression factors, in improving the speech perception. Evaluation of the scheme using the modified rhyme test showed maximum improvement in recognition scores for compression factor of 0.6: about 17 % for the normal-hearing subjects under simulated hearing loss, and 6–21 % for the subjects with moderate to severe sensorineural hearing loss.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114370724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Radix-4 FFT algorithms with ordered input and output data 具有有序输入和输出数据的基数4 FFT算法
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201151
P. Martí-Puig, Ramón Reig Bolaño
{"title":"Radix-4 FFT algorithms with ordered input and output data","authors":"P. Martí-Puig, Ramón Reig Bolaño","doi":"10.1109/ICDSP.2009.5201151","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201151","url":null,"abstract":"In this work we derive two families of radix-4 factorizations for the FFT (Fast Fourier Transform) that have the property that both inputs and outputs are addressed in natural order. These factorizations are obtained from another two families of radix-2 algorithms that have the same property. The radix-4 algorithms obtained have the same mathematical complexity (number of multiplications and additions) that Cooley-Tukey radix-4 algorithms but avoid de bit-reversal ordering applied to the input or at the output.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127791382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Fully scalable intraband coding of wavelet-decomposed 3D meshes 小波分解三维网格的全可伸缩带内编码
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201233
Leon Denis, Shahid M. Satti, A. Munteanu, J. Cornelis, P. Schelkens
{"title":"Fully scalable intraband coding of wavelet-decomposed 3D meshes","authors":"Leon Denis, Shahid M. Satti, A. Munteanu, J. Cornelis, P. Schelkens","doi":"10.1109/ICDSP.2009.5201233","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201233","url":null,"abstract":"In this paper, a scalable intraband wavelet coding technique for semi-regular topology surface meshes is proposed. The choice of an intraband codec design is justified through an information theoretic analysis of the statistical dependencies between the wavelet coefficients resulting from a wavelet-based decomposition of the input 3D mesh. The bitstream produced by the proposed codec is both resolution and quality scalable. This lies in contrast with well-known zero-tree based interband coding techniques that only support quality scalability. The experimental results show that, on average, the proposed codec outperforms the state-of-the-art zero-tree based interband codec in rate-distortion sense when using the 2 L norm as target distortion metric.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125858837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A new prediction structure for multiview video coding 一种新的多视点视频编码预测结构
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201166
M. Pourazad, P. Nasiopoulos, R. Ward
{"title":"A new prediction structure for multiview video coding","authors":"M. Pourazad, P. Nasiopoulos, R. Ward","doi":"10.1109/ICDSP.2009.5201166","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201166","url":null,"abstract":"A new prediction structure for coding multi-view video streams is presented. In general, for Free viewpoint TV (FTV) applications, it is necessary that multi-view videos are efficiently compressed before transmission. Our algorithm synthesizes extra video streams and uses them as extra references when coding the original views. These streams are synthesized based on the already encoded frames from neighboring views, without requiring the scene's depth information. The proposed scheme utilizes both motion and disparity compensation methods to exploit temporal and inter-view correlation within each view sequence and among views, respectively. To guarantee the best bitrate performance, our algorithm adaptively re-sorts the reference frame list, such that minimum number of bits is used for coding reference frame indices. Performance evaluations show that our proposed coding method outperforms the recent multiview coding standard by up to 1 dB PSNR and enhances the compression ratio by 22.97%.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"289 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123731168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Depth estimation and implementation on the DM6437 for panning surveillance cameras 移动监控摄像机DM6437的深度估计与实现
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201224
M. Asif, J. Soraghan
{"title":"Depth estimation and implementation on the DM6437 for panning surveillance cameras","authors":"M. Asif, J. Soraghan","doi":"10.1109/ICDSP.2009.5201224","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201224","url":null,"abstract":"Real-time efficient video analytics (VA) for surveillance system requires “in-camera” or “at camera edge” decision-making. Video Analytics is required to work on good resolution footage in order to register tiny but important information that may otherwise be lost during subsequent compression process, especially in temporally exploited streams. This paper presents a novel approach to estimate 3D location coordinates of selected control points from panning camera footage. The two frames at different panning angles are considered to be two images captured from two different coplanar viewpoints with some translational distance between their optical centers. To simulate panned images as coplanar the information required is the panning angle. With the help of the panning angle transformational matrix two image planes are calculated. The approach developed here will help extract motion descriptors, including and not limited to, motion activity and direction of motion activity. The performance of the algorithm is evaluated in the paper using several test sequences. This paper provides a comprehensive implementation issues onto TI DaVinci platform.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122478937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A sparsity constrained inverse problem to locate people in a network of cameras 在摄像机网络中定位人的稀疏约束逆问题
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201223
Alexandre Alahi, Y. Boursier, L. Jacques, P. Vandergheynst
{"title":"A sparsity constrained inverse problem to locate people in a network of cameras","authors":"Alexandre Alahi, Y. Boursier, L. Jacques, P. Vandergheynst","doi":"10.1109/ICDSP.2009.5201223","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201223","url":null,"abstract":"A novel approach is presented to locate dense crowd of people in a network of fixed cameras given the severely degraded background subtracted silhouettes. The problem is formulated as a sparsity constrained inverse problem using an adaptive dictionary constructed on-line. The framework has no constraint on the number of cameras neither on the surface to be monitored. Even with a single camera, partially occluded and grouped people are correctly detected and segmented. Qualitative results are presented in indoor and outdoor scenes.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121780166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
An adaptive beamforming scheme for cooperative wireless networks 协作无线网络的自适应波束形成方案
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201247
C. Tsinos, K. Berberidis
{"title":"An adaptive beamforming scheme for cooperative wireless networks","authors":"C. Tsinos, K. Berberidis","doi":"10.1109/ICDSP.2009.5201247","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201247","url":null,"abstract":"In this work we present an adaptive beamforming scheme for the uplink transmission of a cooperative wireless system consisted of a single antenna source, single antenna relays and a multiple antenna destination (base station). First, we present a SVD-based beamforming scheme under the assumption that perfect Channel State Information (CSI) is available at the transmitting nodes. Then, we develop an efficient adaptive version of this scheme which requires only partial CSI. The amount of CSI feedback is reduced by employing a prediction mechanism for the singular vectors, at both the transmitters' and the receiver's ends. We evaluate the performance of this system for the amplify-and-forward cooperation protocol.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123298272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Low complexity dense motion estimation using phase correlation 基于相位相关的低复杂度密集运动估计
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201114
V. Argyriou, T. Vlachos
{"title":"Low complexity dense motion estimation using phase correlation","authors":"V. Argyriou, T. Vlachos","doi":"10.1109/ICDSP.2009.5201114","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201114","url":null,"abstract":"We propose a low-complexity dense motion estimation scheme particularly attractive for real-time video applications. Our scheme is based on overlapped block-based motion estimation using phase correlation at critical pixel locations. These form an irregularly sampled grid capturing salient motion features of a scene. The dense vector field is obtained by applying normalized convolution on the irregular grid. Our experiments show that our scheme provides reliable sub-pixel accuracy motion vectors corresponding to actual scene motion, outperforms differential and phase-based methods and yields comparable performance to more complex and time consuming robust motion estimation techniques.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"47 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120922540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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